Display device

Abstract

The present invention discloses a display device comprising a display panel and a lens layer. The display panel has a normal area and a photographic area. The normal area includes a plurality of first light-emitting elements, and the photographic area includes a plurality of second light-emitting elements. A lens layer is disposed over the normal area and the photographic area, and includes a plurality of first lenses overlapping the first light-emitting elements and a plurality of second lenses overlapping the second light-emitting elements. The density of the first lenses in the normal area is greater than the density of the second lenses in the photographic area.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a display device with a lens. Background Art

[0002] As electronic devices become increasingly versatile, they have become essential tools in people's lives. In recent years, electronic devices with display functions have been trending towards larger screen-to-body ratios. However, when electronic devices include cameras or fingerprint sensors, these sensors occupy a portion of the front panel, limiting the display area and screen-to-body ratio. Therefore, the biggest challenge in increasing the screen-to-body ratio is integrating the camera or fingerprint sensor into the display area. Summary of the Invention

[0003] One embodiment of the present invention discloses a display device comprising a display panel and a lens layer. The display panel has a normal area and a photographic area. The normal area includes a plurality of first light-emitting elements, and the photographic area includes a plurality of second light-emitting elements. A lens layer is disposed over the normal area and the photographic area, and includes a plurality of first lenses overlapping the first light-emitting elements and a plurality of second lenses overlapping the second light-emitting elements. The density of the first lenses in the normal area is greater than the density of the second lenses in the photographic area. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1 FIG. 1 is a schematic top view of a display device according to an embodiment of the present invention.

[0005] Figure 2 FIG2 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

[0006] Figure 3 FIG. 1 is a schematic top view of a portion of a display device corresponding to a normal area and a photographing area according to an embodiment of the present invention.

[0007] Figure 4 Shown along Figure 3 Schematic cross-sectional view of the section line AA'.

[0008] Figure 5 Shown along Figure 3 Schematic cross-sectional view of the section line BB'.

[0009] Figure 6 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a photographing area according to another embodiment of the present invention.

[0010] Figure 7 FIG. 1 is a schematic top view of a portion of a display device corresponding to a normal area and a photographing area according to another embodiment of the present invention.

[0011] Figure 8 Shown along Figure 7 Schematic cross-sectional view of the section line C-C'.

[0012] Figure 9 FIG. 1 is a schematic top view of a portion of a display device corresponding to a normal area and a photographing area according to another embodiment of the present invention.

[0013] Figure 10 Shown along Figure 9 Schematic cross-sectional view of the section line D-D'.

[0014] Figure 11 Shown are schematic cross-sectional views of a portion of a display device corresponding to a photographing area according to another embodiment of the present invention.

[0015] Figure 12 Schematic top view showing the correspondence between the lens and sub-pixels in the photographing area according to some embodiments of the present invention.

[0016] Figure 13 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to an embodiment of the present invention.

[0017] Figure 14 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention.

[0018] Figure 15 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention.

[0019] Figure 16 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention.

[0020] Figure 17 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention.

[0021] Figure 18 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention.

[0022] Figure 19 Shown are schematic cross-sectional views of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment.

[0023] Explanation of reference numerals: 12 - display panel; 14, 14a, 14b, 14c, 16, 16a, 16b, 16c, 18, 18a, 18b, 18c - light-emitting element; 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j, 1k, 1l - display device; 1S - display surface; 20 - camera module; 22 - fingerprint sensing module; 22a - sensing unit; 24 - lens layer; 24a, 24b, 24c, 24d, 2 4e-lens; 24S, S1-upper surface; 26-substrate; 28-circuit layer; 30, 46d-light shielding layer; 32-driving element; 34-semiconductor layer; 36-planarization layer; 38-light-emitting layer; 40, 54-encapsulation layer; 42-filling layer; 44-buffer layer; 46-color filter layer; 46a-first color filter unit; 46b-second color filter unit; 46c-third color filter unit; 46e-color filter; 48-filling layer; 50-touch screen Control element layer; 58 - readout element; A-A', B-B', C-C', D-D', E-E' - section lines; CH - channel; CL - conductive layer; CR - camera area; DR - display area; E1, E2, E3, E4, E5, E6 - electrodes; FR - fingerprint sensing area; G - gate; HD1, HD2 - horizontal direction; IN1, IN2, IN3, IN4, 52 - insulation layer; L - ambient light; M1, M2 - metal layer; NR - normal area; OP 1. OP2, OP3, OP4, OP5, OP10, OP11, OP12 - openings; OP6 - first opening; OP7 - second opening; OP8 - fourth opening; OP9 - third opening; P1 - upper left part; P2 - upper right part; P3 - lower left part; P4 - lower right part; S2 - lower surface; SD1 - source (drain) area; SD2 - source (drain) area; TD - top view direction; TR1, TR2 - light-transmitting area; W1, W2 - width. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings. To make the present invention more clear and understandable, the following drawings may be simplified schematic diagrams, and the elements therein may not be drawn to scale. Furthermore, the number and size of the elements in the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] Throughout the present specification and claims, certain terms are used to refer to specific components. Those skilled in the art will appreciate that electronic device manufacturers may refer to the same components by different names, and this document does not intend to distinguish between components that have the same function but different names. Throughout the following specification and claims, the words "including" and "comprising" are open-ended and should be interpreted as meaning "including, but not limited to..."

[0026] The use of ordinal numbers such as "first" and "second" in the specification and claims to modify claim elements does not, by itself, imply or indicate any prior ordinal number of the claimed elements, nor does it indicate the order of one claimed element relative to another claimed element or the order of manufacturing methods. The use of ordinal numbers is solely to clearly distinguish one claimed element from another claimed element with the same name. Thus, a first element mentioned in the specification may be referred to as a second element in a claim.

[0027] The directional terms used in the following embodiments, such as "up," "down," "left," "right," "front," or "rear," are intended solely to refer to the directions in the accompanying drawings. Therefore, the directional terms used are intended to illustrate and not to limit the present invention. It should be understood that elements not specifically described or illustrated may exist in various forms well known to those skilled in the art. Throughout this document, when an element is referred to as "overlapping" another element, it should be understood that the element partially overlaps or completely overlaps the other element.

[0028] In addition, when an element or film layer is referred to as being on or over another element or film layer, or being connected to another element or film layer, it should be understood that the element or film layer is directly located on or directly connected to the other element or film layer, or that there are other elements or film layers (indirectly) between the two. Conversely, when an element or film layer is referred to as being "directly on" or "directly connected to" another element or film layer, it should be understood that there are no intervening elements or film layers between the two.

[0029] As used herein, the terms "about," "substantially," or "approximately" generally indicate a range within 10%, within 5%, within 3%, within 2%, within 1%, or within 0.5% of a given value. The quantities given herein are approximate, meaning that even without the specific wording "about," "substantially," or "approximately," the meaning of "about," "substantially," or "approximately" may be implied.

[0030] It should be understood that the following embodiments may be implemented by replacing, recombining, or combining features from various embodiments to create other embodiments without departing from the spirit of the present invention. Features from various embodiments may be mixed and matched as needed, as long as they do not violate the spirit of the invention or conflict with it.

[0031] In the present invention, the length, thickness, width and depth may be measured using an optical microscope, an electron microscope or other methods, but are not limited thereto.

[0032] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meanings as commonly understood by one skilled in the art to which this invention belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant art and this invention, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of this invention.

[0033] In the present invention, the display device may have a display function and may optionally include light sensing, image sensing, biometric recognition, touch, antenna, other suitable functions, or a combination of the above functions, but is not limited thereto. In some embodiments, the display device may include a spliced ​​display device, but is not limited thereto. The display device may include liquid crystal molecules (LC molecules), light-emitting diodes (LEDs), or quantum dot (QD) materials, fluorescent materials, phosphor materials, other suitable materials, or a combination of the above, but is not limited thereto. The light-emitting diode may, for example, include an organic light-emitting diode (OLED), a micro-LED, a sub-millimeter light-emitting diode (mini-LED), or a quantum dot light-emitting diode (QLED or QDLED), but is not limited thereto. In addition, the display device may, for example, be a color display device, a monochrome display device, or a grayscale display device. The shape of the display device may, for example, be rectangular, circular, polygonal, a shape with curved edges, a curved surface, or other suitable shapes. The display device may optionally include peripheral systems such as a driving system, a control system, a light source system, and a shelf system.

[0034] Please refer to Figure 1 , which is a schematic top view of a display device according to an embodiment of the present invention. Figure 1 As shown, the display device 1a provided in this embodiment may include a display panel 12 for displaying an image, and the display device 1a may have a display surface 1S for displaying the image. The display panel 12 may have a display area DR for defining the size of the image, that is, the image may be displayed from the display area DR. Figure 1In the embodiment of the present invention, the display area DR of the display panel 12 may have a normal area NR, a photographic area CR, and a fingerprint sensing area FR, wherein the normal area NR may include a plurality of light-emitting elements 14, the photographic area CR may include a plurality of light-emitting elements 16, and the fingerprint sensing area FR may include a plurality of light-emitting elements 18. The photographic area CR may be used to display images and allow image detection through the photographic area CR. The fingerprint sensing area FR may be used to display images and allow fingerprint image detection through the fingerprint sensing area FR. The normal area NR may be used to display images, and the normal area NR may be an area outside the photographic area CR and the fingerprint sensing area FR that can display images. Figure 1 As shown, the density of light-emitting elements 14 in the normal region NR can be greater than the density of light-emitting elements 16 in the photographing region CR. This allows light to pass through larger spaces between the light-emitting elements 16 in the photographing region CR than between the light-emitting elements 14 in the normal region NR, thereby enabling detection of images through the photographing region CR. In some embodiments, the density of light-emitting elements 18 in the fingerprint sensing region FR can be the same as or less than the density of light-emitting elements 14 in the normal region NR, thereby enabling detection of fingerprint images through the fingerprint sensing region FR. In some embodiments, the density of light-emitting elements 18 in the fingerprint sensing region FR can be greater than the density of light-emitting elements 16 in the photographing region CR, but is not limited thereto.

[0035] In some embodiments, the display area DR of the display panel 12 may not have at least one of the photographic area CR and the fingerprint sensing area FR, and may be replaced by a normal area NR. Alternatively, when the entire front surface of the display device 1a can have a fingerprint detection function, the display panel 12 can replace the normal area NR with a fingerprint sensing area FR. In this case, the display panel 12 may have a fingerprint sensing area FR, or a fingerprint sensing area FR and a photographic area CR. It should be noted that the normal area NR, the photographic area CR, and the fingerprint sensing area FR of the present invention refer to portions of the display panel 12 in different areas and may include elements corresponding to the areas. For example, the photographic area CR refers to the portion of the display panel 12 corresponding to the photographic area CR and may include elements in the display panel 12 corresponding to the photographic area CR. Similarly, the normal area NR and the fingerprint sensing area FR may also be applied.

[0036] like Figure 1As shown, the light-emitting element 14 may include, but is not limited to, light-emitting elements 14a, 14b, and 14c, each configured to generate light of different colors and serve as a sub-pixel of different colors. For example, the light-emitting elements 14a, 14b, and 14c may be configured to generate blue, red, and green light, respectively, but are not limited thereto. Similarly, the light-emitting element 16 may include, but is not limited to, light-emitting elements 16a, 16b, and 16c, each configured to generate light of different colors and serve as a sub-pixel of different colors, and the light-emitting element 18 may include, but is not limited to, light-emitting elements 18a, 18b, and 18c, each configured to generate light of different colors and serve as a sub-pixel of different colors. In some embodiments, the light-emitting element 14 may generate light of the same color and be combined with color conversion layers of different colors, so that the portion of the display device 1a corresponding to the normal region NR can produce a color image. Light-emitting element 16 and / or light-emitting element 18 may also selectively generate light of the same color and be combined with color conversion layers of different colors, so that portions of display device 1a corresponding to the camera region CR and / or fingerprint sensing region FR can produce color images. The color conversion layers may include, for example, quantum dot materials, fluorescent materials, phosphorescent materials, color filter materials, or other suitable color conversion materials.

[0037] exist Figure 1 In the embodiment, taking the pixel arrangement of PenTile as an example, a pixel PX in the normal area NR may include one light-emitting element 14a, one light-emitting element 14b and two light-emitting elements 14c. In some embodiments, different light-emitting elements may have different light-emitting areas. For example, the light-emitting area of ​​light-emitting element 14a and / or the light-emitting area of ​​light-emitting element 14b may be larger than the light-emitting area of ​​light-emitting element 14c, but is not limited to this. Similarly, the pixels PX in the fingerprint sensing area FR and the photography area CR may also have the same or similar arrangement and / or size as the pixels PX in the normal area NR, but is not limited to this. In some embodiments, the size, number, color and arrangement of the light-emitting elements forming the pixel PX can be adjusted according to actual needs.

[0038] Please refer to Figure 2 , which is a cross-sectional view of a display device according to an embodiment of the present invention. In order to clearly show the photographic area CR and the fingerprint recognition area FR, Figure 2 The elements in the normal region NR are omitted, but not limited to this. Figure 2As shown, when the display panel 12 has a photographic region CR, the display device 1a may further include a photographic module 20 disposed below the display panel 12 and overlapping the photographic region CR. Specifically, the photographic region CR may include a plurality of light-transmitting regions TR1 to allow light to pass through. The photographic module 20 may overlap with the light-transmitting regions TR1 in the top-down direction TD, allowing the photographic module 20 to capture image information through the light-transmitting regions TR1. In some embodiments, the transmittance of visible light in the light-transmitting regions TR1 may be, for example, greater than 50%, but is not limited thereto. It should be noted that "overlap" herein may mean that two elements overlap in the top-down direction TD of the display device 1a, where the top-down direction TD may be, for example, a direction perpendicular to the normal of the display surface 1S.

[0039] When the display panel 12 has a fingerprint sensing area FR, the display device 1a may further include a fingerprint sensing module 22 disposed under the display panel 12 and configured to detect fingerprint images. The fingerprint sensing module 22 may, for example, include a plurality of sensing units 22a configured to detect light intensity. Figure 2 In an embodiment, the fingerprint sensing region FR may include multiple light-transmitting regions TR2 to allow light to pass through. The sensing units 22a of the fingerprint sensing module 22 may overlap with the light-transmitting regions TR2, allowing the fingerprint sensing module 22 to capture fingerprint images through the light-transmitting regions TR2 for fingerprint recognition. The sensing units 22a may, for example, be configured to detect visible or invisible light. Invisible light may include infrared, ultraviolet, or other suitable light. The sensing units 22a may include, for example, photodiodes, phototransistors, or other suitable light sensing elements.

[0040] It should be noted that in the present invention, the light-transmitting region TR1 refers to the region of the photographing region CR that is located outside the light-emitting element 16 (or does not have the light-emitting element 16) and allows light to pass through, and the light-transmitting region TR2 refers to the region of the fingerprint sensing region FR that is located outside the light-emitting element 18 (or does not have the light-emitting element 18) and allows light to pass through, and the term "region located outside a component" refers to a region that does not overlap with the component in the top view direction TD of the display panel 12. In addition, Figure 2 The positional relationship between the light-transmitting region TR1 and the light-emitting element 16 and the positional relationship between the light-transmitting region TR2 and the light-emitting element 18 are for illustration only. For details, please refer to the following embodiments and related drawings.

[0041] The following will further describe the structure of the display device corresponding to the normal area NR and the photographic area CR. In order to clearly show the main features of the present invention, the following figures show part of the structure of the display device, but are not limited to this. Please refer to Figures 3 to 5 , Figure 3 FIG. 1 is a top view of a portion of a display device corresponding to a normal area and a photographic area according to an embodiment of the present invention. Figure 4 Shown along Figure 3 A schematic cross-sectional view of the section line AA', and Figure 5 Shown along Figure 3 A schematic cross-sectional view of the section line BB', wherein Figures 3 to 5 The photographic module is omitted, but the present invention is not limited thereto. Figures 3 to 5 As shown, the display device 1a of this embodiment may further include a lens layer 24 disposed on the display panel 12 to enhance the brightness of light generated by the display panel 12. In this embodiment, the lens layer 24 may be disposed on the normal region NR and the photographic region CR, and may include a plurality of lenses 24a that overlap with the light-emitting elements 14 and a plurality of lenses 24b that overlap with the light-emitting elements 16. For example, each lens 24a may overlap with a corresponding light-emitting element 14, and each lens 24b may overlap with a corresponding light-emitting element 16, but this is not limited to this. Because the density of light-emitting elements 14 in the normal region NR may be greater than the density of light-emitting elements 16 in the photographic region CR, the density of lenses 24a in the normal region NR may be greater than the density of lenses 24b in the photographic region CR. In the present invention, "lens density" may refer to the number of lenses calculated from any 2 mm x 2 mm area in the normal region NR, the photographic region CR, or the fingerprint sensing region FR, as viewed from the top view direction TD. It is worth noting that lens 24a and lens 24b can be used to focus the light generated by light-emitting element 14 and light-emitting element 16, respectively, toward the display surface 1S of display device 1a, thereby increasing the light output brightness of each sub-pixel of display device 1a. For example, lens 24a and lens 24b can be convex lenses or other suitable lens types. In some embodiments, lens 24a and lens 24b can be separated from each other to reduce light mixing between sub-pixels. In some embodiments, lens 24a and lens 24b can have the same or different refractive indices, for example, as required.

[0042] exist Figures 3 to 5In the embodiment, when viewed from the top direction TD, the lenses 24a corresponding to different light-emitting elements in the normal region NR (e.g., two of the light-emitting elements 14a, 14b, and 14c) may have approximately the same top-view dimensions. For example, the two lenses 24a may have the same width in the horizontal direction (e.g., horizontal direction HD1 or horizontal direction HD2), but this is not limited to this. Similarly, the lenses 24b corresponding to different light-emitting elements in the imaging region CR (e.g., two of the light-emitting elements 16a, 16b, and 16c) may also have approximately the same top-view dimensions. For example, the two lenses 24b may have the same width in the horizontal direction, but this is not limited to this. Furthermore, the lenses 24a and 24b may have approximately the same top-view dimensions, for example, the same width in the horizontal direction, but this is not limited to this. It should be noted that the "lens width" herein refers to the width of the lens base, and the lens base width refers to the maximum width along a cross-sectional line passing through the center point of the lens. Furthermore, comparison of lens widths is based on the magnitude of this maximum width. For example, the width of lens 24a may be its maximum width along section line AA' along horizontal direction HD1, while the width of lens 24b may be its maximum width along section line BB' along horizontal direction HD1, but the present invention is not limited thereto. Horizontal direction HD1 and horizontal direction HD2 may be perpendicular to each other and perpendicular to top-view direction TD, for example.

[0043] In some embodiments, the curvature radius of the upper surface 24S of the lens 24a and / or the lens 24b can be adjusted according to needs. For example, the thickness of the lens layer 24 in the top-view direction TD can be reduced by increasing the curvature radius of the upper surface 24S of the lens 24a without changing the size of the lens 24a viewed from the top-view direction TD, thereby reducing the thickness of the display device 1a.

[0044] The structure of the display panel 12 will be further described below, and a self-luminous display panel will be used as an example, but the present invention is not limited thereto. Figure 4 and Figure 5 As shown, the display panel 12 may include a substrate 26, a circuit layer 28, and a light shielding layer 30, which are disposed under the light emitting element 14 and the light emitting element 16. The substrate 26 may include a transparent substrate, a translucent substrate, an opaque substrate, or may include a soft or hard substrate. For example, the substrate 26 may include glass, quartz, plastic or other substrates, but is not limited thereto. The circuit layer 28 may be disposed between the substrate 26 and the light emitting element 16, and the light shielding layer 30 may be disposed between the substrate 26 and the circuit layer 28. In other words, the light shielding layer 30, the circuit layer 28, and the light emitting elements (for example, the light emitting element 14 and the light emitting element 16) may be sequentially disposed on the upper surface S1 of the substrate 26. In some embodiments, Figure 2The camera module 20 and / or fingerprint sensor module 22 shown can be disposed on the lower surface S2 of the substrate 26, but is not limited thereto. It should be noted that since ambient light or any light entering from the camera region CR enters from the display surface 1S of the display device 1a and passes through the display panel 12 and is reflected by the camera module 20 and / or fingerprint sensor module 22, a light shielding layer 30 is provided between the substrate 26 and the circuit layer 28 to reduce or prevent light leakage current generated by the active components in the circuit layer 28. Figure 3 In the embodiment, the light shielding layer 30 may be disposed in the normal region NR and the photographing region CR, for example, the substrate 26 may cover the normal region NR and the photographing region CR, but is not limited thereto. In some embodiments, since the reflected light is mainly located in the photographing region CR and / or the fingerprint sensing region FR, the light shielding layer 30 may be disposed in the photographing region CR and a portion of the normal region NR adjacent to the photographing region CR, such as Figure 7 Alternatively, the light shielding layer 30 may not be provided in the normal region NR but may be provided in the photographing region CR, as shown in FIG. Figure 9 The light shielding layer 30 may include, for example, metal or other suitable light shielding materials.

[0045] like Figure 3 and Figure 5 As shown, the light shielding layer 30 of the photographing region CR may have a plurality of openings OP1 to allow light to be projected from the display surface 1S of the display device 1a to the lower surface S2 of the substrate 26, so that the photographing module (eg Figure 2 The camera module 20 shown in FIG. 1 is capable of detecting images through the opening OP1. Figure 3 and Figure 5 In the embodiment of FIG. 5 , the opening OP1 may define a light-transmitting region TR1 . In other words, the size of the opening OP1 may be the same as the size of the light-transmitting region TR1 .

[0046] like Figure 4 and Figure 5 As shown, the circuit layer 28 can electrically connect the light-emitting element 14 and the light-emitting element 16, and is used to control the switching and luminous brightness of the light-emitting element 14 and the light-emitting element 16, so that the display device 1a can achieve the effect of displaying images. The circuit layer 28 may include a plurality of active components to drive the corresponding light-emitting elements. For example, the active component may include a driving element 32 and a switching element (not shown), wherein the driving element 32 can be used to drive the corresponding light-emitting element 14 or the light-emitting element 16 to generate light, and the switching element can be used to control the switching of the driving element 32, but is not limited to this. The active component may, for example, include a thin film transistor or other suitable transistor, but is not limited to this. In some embodiments, the circuit layer 28 may also include signal lines (not shown) and other suitable components in addition to the active components. The signal line may, for example, include a data line, a scan line, a shared line, a power line or other required signal lines.

[0047] exist Figure 4 and Figure 5 In an embodiment, the driver element 32 and the switch element may be, for example, top-gate thin-film transistors. In this case, the circuit layer 28 may include a semiconductor layer 34, an insulating layer IN1, a metal layer M1, an insulating layer IN2, a metal layer M2, an insulating layer IN3, and a planar layer 36. The semiconductor layer 34 is disposed on the substrate 26 and may include a channel CH of the driver element 32, a source / drain region SD1, and a drain / source region SD2. The source / drain region SD1 and the drain / source region SD2 may be disposed on either side of the channel CH and, for example, may include, but are not limited to, a P-type doped or N-type doped semiconductor. The insulating layer IN1 may be disposed on the semiconductor layer 34 to serve as a gate insulating layer for the driver element 32. The metal layer M1 may be disposed on the insulating layer IN1 and include a plurality of gates G of the driver element 32, each disposed on a corresponding channel CH. The insulating layer IN2 may be disposed on the metal layer M1, and both the insulating layers IN1 and IN2 may have a plurality of holes. The metal layer M2 can be disposed on the insulating layer IN2 and include a plurality of electrodes E1 and a plurality of electrodes E2, and the electrodes E1 and the electrodes E2 can be electrically connected to the corresponding source (drain) region SD1 and the drain (source) region SD2 through the holes in the insulating layer IN2 and the insulating layer IN1, respectively. The insulating layer IN3 can be disposed on the metal layer M2 and have a plurality of holes. The metal layer M3 can be disposed on the insulating layer IN3 and include a plurality of electrodes E3, each electrically connected to the corresponding drain (source) region SD2 through the holes in the insulating layer IN3. The planar layer 36 can be disposed on the metal layer M3 and have a plurality of holes. The light-emitting element 14 and the light-emitting element 16 can be electrically connected to the corresponding driving element 32 through the holes in the planar layer 30, respectively.

[0048] The semiconductor layer 34 may, for example, include amorphous silicon, low-temperature polysilicon (LTPS), a metal-oxide semiconductor, a combination of low-temperature polysilicon and an oxide semiconductor, or other suitable semiconductor materials. The insulating layer IN1, the insulating layer IN2, the insulating layer IN3, and the planarizing layer 36 may include insulating materials. For example, the insulating materials may include inorganic insulating materials or organic insulating materials. The inorganic insulating materials may, for example, include silicon oxide, silicon nitride, silicon oxynitride, or other suitable inorganic materials. In some embodiments, the insulating layer IN2 may include a single layer or a multilayer structure. For example, when the insulating layer IN2 includes a multilayer structure, the multilayer structure may include a stack of silicon oxide and silicon nitride, but is not limited thereto. The metal layer M1, the metal layer M2, and the metal layer M3 may, for example, respectively include aluminum, molybdenum nitride, copper, titanium, other suitable materials, or a combination of at least two of the foregoing, but is not limited thereto.

[0049] The structure of the circuit layer 28 of the present invention is not limited to that described above. The stacking method and / or number of insulating layers, metal layers, or other film layers in the circuit layer 28 can be adjusted according to actual needs, for example, depending on the type of driver element 32 and switch element or the type of pixel circuit. In some embodiments, the driver element 32 and switch element can also be, for example, bottom-gate thin-film transistors, or can be modified to dual-gate transistors or other suitable transistors as needed.

[0050] like Figure 4 and Figure 5 As shown, the display panel 12 may further include an insulating layer IN4 disposed on the circuit layer 28, wherein the insulating layer IN4 may include a plurality of openings OP2, and the light-emitting units 14 and the light-emitting units 16 may be disposed corresponding to the openings OP2, respectively. The insulating layer IN4 may, for example, serve as a pixel definition layer, such that in the top view direction TD, the region of the opening OP2 may be used to define a pixel or sub-pixel of the display device 1a, but is not limited thereto. The insulating layer IN4 may, for example, include a light-shielding material, wherein the light-shielding material may include, for example, an organic material or other suitable material, or the light-shielding material may be, for example, a black material, but is not limited thereto.

[0051] exist Figure 4 and Figure 5 In the embodiment, the light emitting element 14 and the light emitting element 16 include an organic light emitting diode as an example. In this case, the light emitting element 14 and the light emitting element 16 may respectively include an electrode E4, a light emitting layer 38 and an electrode E5. The electrode E4 may be disposed on the flat layer 36 and separated from each other. The insulating layer IN4 may be disposed on the electrode E4 and the flat layer 36, and each electrode E4 may be exposed by the corresponding opening OP2. In addition, each light emitting layer 38 may be disposed in the opening OP2 of the corresponding insulating layer IN4, and the electrode E5 may be disposed on each light emitting layer 38 and extend onto the insulating layer IN4. The electrode E4 and the electrode E5 may, for example, be the anode and cathode of the organic light emitting diode, respectively, but are not limited thereto and may also be interchangeable with each other. Figure 4 and Figure 5In the embodiment, the electrodes E5 of the light-emitting element 14 and the light-emitting element 16 may be formed by the same conductive layer CL, but are not limited thereto. The conductive layer CL may, for example, include a transparent conductive material or other suitable material to allow the light generated by the light-emitting layer 38 to pass through. It should be noted that the region of the light-emitting element 14 and the light-emitting element 16 may, for example, be defined as the region where the electrode E4, the light-emitting layer 38, and the electrode E5 overlap in the top-view direction TD, but are not limited thereto. The light-emitting element 14 and the light-emitting element 16 of the present invention are not limited thereto. In some embodiments, the light-emitting element 14 and the light-emitting element 16 may also, for example, include a light-emitting diode, wherein the light-emitting diode may, for example, be a light-emitting diode chip or a light-emitting diode packaging structure. In this case, the region of the light-emitting element 14 and the light-emitting element 16 may be defined as the region of the light-emitting diode.

[0052] like Figure 4 and Figure 5 As shown, the display panel 12 may further include an encapsulation layer 40 disposed on the light-emitting elements 14, 16, and the insulating layer IN4. The lens layer 24 may be disposed on the encapsulation layer 40, for example, but is not limited thereto. The encapsulation layer 40 may be used to protect the light-emitting elements 14 and 16. For example, the encapsulation layer 40 may include an acrylic material, a silicone material, an epoxy resin, polyimide (PI), or other suitable encapsulation materials. Furthermore, the encapsulation layer 40 may also be an alternating stack of inorganic and organic layers, such as a three-layer or five-layer structure of inorganic layer-organic layer-inorganic layer.

[0053] like Figure 5 As shown, the circuit layer 28 may have a plurality of openings OP3 corresponding to the openings OP1 of the light shielding layer 30, and the insulating layer IN4 may also have a plurality of openings OP4 corresponding to the openings OP3. Figure 5 An opening OP3 and an opening OP4 are shown, but the present invention is not limited thereto. Figure 5 In an embodiment, the display panel 12 may further include a filling layer 42 disposed in the opening OP3 and the opening OP4. In some embodiments, the height of the filling layer 42 may be adjusted as needed. For example, it may be disposed in the opening OP3 but not in the opening OP4. The filling layer 42 may, for example, include the same or similar material or combination as the encapsulation layer 40, but is not limited thereto. The surface of the filling layer 42 may, for example, be flat or concave-convex. It should be noted that since the opening OP3 has a certain depth in the top-down direction TD, by disposing the filling layer 42 at least in the opening OP3, it may, for example, help reduce the risk of the encapsulation layer 40 being disposed in a hole that is too deep.

[0054] In some embodiments, as Figure 4 and Figure 5As shown, the display panel 12 may further optionally include a buffer layer 44 disposed between the substrate 26 and the circuit layer 28. The buffer layer 44 may, for example, be used to prevent moisture, oxygen, or ions from entering the display panel 12. The buffer layer 44 may include a single-layer structure or a multi-layer structure. The material of the buffer layer 44 may, for example, include silicon nitride, silicon oxide, silicon oxynitride, aluminum oxide, resin, other suitable materials, or a combination of at least two of the above, but is not limited thereto. Figure 5 In the embodiment of FIG. 5 , the buffer layer 44 may have a plurality of openings OP5 corresponding to the openings OP1. For example, in the horizontal direction (eg Figure 3 In the horizontal direction HD1 or the horizontal direction HD2 shown, the width of the opening OP5 may be smaller than the width of the opening OP1, but is not limited thereto. In some embodiments, the display panel 12 may omit the buffer layer 44, but is not limited thereto.

[0055] like Figure 4 and Figure 5 As shown, the display device 1a may optionally include a color filter layer 46 disposed on the lens layer 24, wherein the color filter layer 46 includes a plurality of color filter units overlapping the light emitting elements 14 and the light emitting elements 16. For example, the color filter units may include a plurality of first color filter units 46a, a plurality of second color filter units 46b, and a plurality of third color filter units (e.g., Figure 6 The first color filter unit 46a, the second color filter unit 46b and the third color filter unit 46c can have different colors, so they can have different transmittances for light of different wavelength ranges. The first color filter unit 46a, the second color filter unit 46b and the third color filter unit 46c can be, for example, a blue filter, a red filter and a green filter, respectively, but are not limited thereto. Figure 4 and Figure 5 In the embodiment, the first color filter unit 46a can overlap with the light emitting element 14a and the light emitting element 16a respectively, the second color filter unit 46b can overlap with the light emitting element 14b and the light emitting element 16b respectively, and the third color filter unit 46c can overlap with the light emitting element 14b and the light emitting element 16b respectively. Figure 1 The light-emitting element 14c and the light-emitting element 16c are shown overlapping, but the present invention is not limited thereto. The first color filter unit 46a, the second color filter unit 46b, and the third color filter unit 46c may, for example, have an anti-reflection effect to reduce interference of ambient light on the image displayed by the display device 1. In some embodiments, the color filter layer 46 may be replaced with other types of anti-reflection films, such as linear polarizers.

[0056] like Figure 4 and Figure 5As shown, the color filter layer 46 may further include a light shielding layer 46d disposed between the color filter units. Specifically, the light shielding layer 46d may have a plurality of first openings OP6, a plurality of second openings OP7, and a third opening (eg, Figure 6 The third opening OP9 shown in the figure) is shown, wherein the first color filter unit 46a can be disposed in the first opening OP6, the second color filter unit 46b can be disposed in the second opening OP7, and the third color filter unit can be disposed in the third opening. It should be noted that the light shielding layer 46d may also have a plurality of fourth openings OP8, each corresponding to the light-transmitting region TR1, so that light passing through the light-transmitting region TR1 of the display panel 12 can pass through the fourth openings OP8. When viewed from the top direction TD, the size of the fourth opening OP8 may, for example, be larger than the size of the opening OP1 to increase the amount of light entering the light-transmitting region TR1. In some embodiments, the color filter layer 46 may not have a color filter unit or color filter in the fourth opening OP8. In some embodiments, the display device 1a may further include an encapsulation layer 54 disposed on the color filter layer 46.

[0057] exist Figure 4 and Figure 5 In the embodiment of FIG. 4 , the display device 1a may include a filler layer 48 disposed on the lens layer 24 and the display panel 40 and located between the lens layer 24 and the color filter layer 46. For example, the filler layer 48 may have a flat upper surface to facilitate the formation of a film layer (e.g., the color filter layer 46) located on the lens layer 24.

[0058] In some embodiments, the display device 1a may further optionally include a touch element layer 50 and an insulating layer 52, wherein the insulating layer 52 may be disposed on the fill layer 48, and the touch element layer 50 may be disposed between the fill layer 48 and the insulating layer 52. The touch element layer 50 may be used to detect the position of a finger touching or approaching the display surface 1S of the display device 1a. Figure 5 In the embodiment, the touch element layer 50 may, for example, comprise a metal mesh that overlaps the light shielding layer 46d in the top-down direction TD to reduce visibility of the touch element layer 50. The number of film layers and / or the pattern in the top-down direction TD of the touch element layer 50 can be designed as needed. In some embodiments, the touch element layer 50 is not limited to a metal mesh and may be replaced with other types of touch elements. The insulating layer 52 may, for example, comprise silicon oxide, silicon nitride, or other suitable insulating materials.

[0059] The display device is not limited to the above-described embodiment and may have other embodiments. To simplify the description, the same reference numerals as in the above-described embodiment will be used to designate the same elements in the other embodiments below. To facilitate comparison between the above-described embodiment and other embodiments, the differences between the embodiments will be highlighted below, and repeated descriptions will not be repeated.

[0060] Figure 6 FIG2 is a cross-sectional view of a portion of a display device corresponding to a photographic area according to another embodiment of the present invention. Figure 6 As shown, in the display device 1b provided in the present embodiment, the lenses 24b corresponding to different light-emitting elements in the photographic area CR may have different widths. For example, in a case where the light-emitting area of ​​the light-emitting element 16c may be smaller than the light-emitting area of ​​the light-emitting element 16b, the width of the lens 24b disposed on the light-emitting element 16c may be smaller than the width of the lens 24b disposed on the light-emitting element 16b. In this case, the upper surfaces 24S of the lenses 24b corresponding to different light-emitting elements may, for example, have the same or different radii of curvature. It is worth noting that, by designing the lenses 24b to have different widths, the lenses 24b may be less in contact with each other when forming the lens layer 24, or it may help to reduce the difficulty of the manufacturing process. In some embodiments, the lens 24b disposed at Figure 5 The width of the lens 24b on the light emitting element 16a shown may also be greater than the width of the lens 24b disposed on the light emitting element 16c.

[0061] exist Figure 6 In the embodiment of the present invention, the third opening OP9 overlapping with the light emitting element 16c may also be smaller than the second opening OP7 overlapping with the light emitting element 16b, so that in the horizontal direction (eg Figure 3 In the horizontal direction HD1 or the horizontal direction HD2 shown in FIG, the width of the third color filter unit 46c disposed in the third opening OP9 may be, for example, smaller than the width of the second color filter unit 46b and / or the first color filter unit (eg, Figure 5 In some embodiments, the lenses 24a corresponding to different light emitting elements in the normal region NR may also have different widths, for example, the design may be the same as that of the lenses 24b in the photographic region CR.

[0062] In some embodiments, the display device 1b may not have Figure 5 In this case, the encapsulation layer 40 may be further disposed in the opening OP3, or in the opening OP3 and the opening OP5, but is not limited thereto. In some embodiments, Figure 6 The other parts of the display device 1 b shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and thus will not be described in detail.

[0063] Figure 7 FIG. 1 is a top view of a portion of a display device corresponding to a normal area and a photographic area according to another embodiment of the present invention, and FIG. Figure 8 Shown along Figure 7 The cross-sectional view of the section line C-C'. Figure 7 and Figure 8As shown, in the display device 1c provided in this embodiment, the lens 24a of the normal area NR and the lens 24b of the photographic area CR in the display device 1c may have different widths. For example, the width of the lens 24a may be smaller than the width of the lens 24b. Figure 7 and Figure 8 In the embodiment, one of the lenses 24b may overlap with the plurality of light emitting elements 16 in the photographing region CR. For example, the lens 24b may overlap with one light emitting element 16a, one light emitting element 16b, and two light emitting elements 16c, or overlap with one pixel, but is not limited thereto.

[0064] In some embodiments, as Figure 7 As shown, the top view shape of the opening OP1 of the light shielding layer 30 is not limited to Figure 3 The circular shape shown in the figure can be other shapes, such as a rectangle or other suitable shapes. In some embodiments, the light shielding layer 30 can be disposed in the photographing region CR and a portion of the normal region NR adjacent to the photographing region CR, but is not limited thereto.

[0065] In some embodiments, Figure 7 and Figure 8 The other parts of the display device 1c shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0066] Figure 9 FIG. 1 is a top view of a portion of a display device corresponding to a normal area and a photographic area according to another embodiment of the present invention. Figure 10 Shown along Figure 9 The cross-sectional view of the section line D-D' is shown in FIG. Figure 9 and Figure 10 As shown, in the display device 1d provided in this embodiment, the lens layer 24 in the display device 1d further includes a plurality of lenses 24c overlapping with the light-transmitting region TR1. For example, the top view size of the lens 24c is approximately the same as the top view size of the opening OP1, but is not limited thereto. It should be noted that by overlapping the lens 24c with the light-transmitting region TR1, it is possible to help focus light on the camera module (such as the one located under the display panel 12). Figure 2 In some embodiments, lens 24b and lens 24c may have the same or different radii of curvature. In some embodiments, lens 24c may have the same or different refractive index as lens 24a and / or lens 24b.

[0067] In some embodiments, the light shielding layer 30 may be disposed in the photographing region CR instead of the normal region NR, but is not limited thereto. Figure 9 and Figure 10 The other parts of the display device 1d shown may be, for example, display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail. Figure 9 and Figure 10 The lens 24b shown may be, for example, Figure 7 The lens 24b shown overlaps with the plurality of light emitting elements 16.

[0068] Figure 11 Shown are schematic cross-sectional views of portions of the display device corresponding to the photographic area of ​​another variant embodiment. Figure 11 As shown, the display device 1e of this embodiment is Figure 5 One of the differences of the display device 1a shown is that the lens layer 24 can be disposed on the color filter layer 46. In other words, the touch element layer 50 and the insulating layer 52 can be directly disposed on the encapsulation layer 40, but the present invention is not limited thereto. In some embodiments, other film layers can still exist between the touch element layer 50 and the encapsulation layer 40. In addition, in this embodiment, the fill layer 48 can be optionally disposed on the lens layer 24 to protect the lens layer 24, but the present invention is not limited thereto. In some embodiments, Figure 11 The other parts of the display device 1e shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0069] Figure 12 Schematic diagram of the top view of the corresponding relationship between the lens and the sub-pixels of the photographic area in some embodiments of the present invention. Figure 12 As shown in the upper left part P1, the upper right part P2 and the lower left part P3 of the display device 1f, one lens 24b of the display device 1f may overlap with a plurality of sub-pixels SPX in the top-view direction TD, wherein the sub-pixels SPX may be, for example, Figure 1 The light emitting element 16 is shown, but not limited thereto. Figure 12 In the upper left portion P1 of FIG, one pixel PX may include a plurality of sub-pixels SPX and arranged in the same block, and one lens 24b may overlap with one pixel PX arranged in the same block. Figure 12 In the upper right portion P2 and the lower left portion P3 of FIG, a plurality of pixels PX may be arranged in one block, and a lens 24b may overlap with the plurality of pixels PX arranged in the same block. Figure 12 In the upper left portion P1 and the upper right portion P2, the top view shape of the lens 24b may be different from the top view shape of the block. For example, the top view shape of the lens 24b may be circular, while the top view shape of the block may be rectangular, but the present invention is not limited thereto. Figure 12 A light-transmitting region TR1 may be provided between different blocks.

[0070] exist Figure 12 In the lower left portion P3 and the lower right portion P4 of the display device 1f, the top view shape of the lens 24b can be designed along the outline of the block or sub-pixel, and can be the same as or similar to the top view shape of the corresponding block or sub-pixel. Figure 12 As shown in the lower left portion P3 of FIG, when the plurality of sub-pixels SPX are arranged in a rectangular block, the top view shape of the lens 24b may be, for example, rectangular. The top view shape of the lens 24b may have rounded corners, but is not limited thereto. Figure 12 As shown in the lower right portion P4 of FIG, multiple pixels PX can be arranged into a block, and the same block can overlap with multiple lenses 24b. For example, one lens 24b can overlap with at least one sub-pixel SPX of the same color. Figure 12 In the lower right portion P4 of FIG, pixel PX may include one sub-pixel SPX1, two sub-pixels SPX2, and one sub-pixel SPX3. Sub-pixels SPX1, SPX2, and SPX3 are configured to generate light of different colors, and the sizes of sub-pixels SPX1 and SPX3 may be larger than those of sub-pixel SPX2. One lens 24b may overlap with one sub-pixel SPX1 or SPX3, while another lens 24b may overlap with two sub-pixels SPX2 generating the same color. This allows different lenses 24b to have approximately the same top-view size, but is not limited thereto. In this case, the top-view shape of lens 24b may be similar to or identical to the top-view shape of the sub-pixel it overlaps with.

[0071] It should be noted that in Figure 12 In the lower left portion P3 and the lower right portion P4 of the display device 1f, the display device 1f may further include a conductive line group WL electrically connected to the sub-pixels in the same block. Figure 12 In the figure, a wire group WL represents a plurality of wires electrically connecting different sub-pixels within the same block. By placing the wire group WL at the edge of the light-transmitting region TR1 and / or reducing the width of the wire group WL to less than the width of the block, the area of ​​the light-transmitting region TR1 can be increased. The wire group WL can be reduced, for example, by reducing the spacing and / or the width of the wires within the same wire group WL, and / or by forming the wires from different conductive layers with an insulating layer between any two conductive layers, thereby allowing the wires to overlap, but is not limited to these methods.

[0072] In some embodiments, Figure 12 At least one of the upper left portion P1 , the upper right portion P2 , the lower left portion P3 and the lower right portion P4 of the display device 1 f shown may be applicable to display devices of other embodiments. Figure 12 The other parts of the display device 1f shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0073] The structure of the display device corresponding to the fingerprint sensing area will be further described below. Figure 13 And refer to Figure 1 . Figure 13 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to an embodiment of the present invention. Figure 13 For example, along Figure 1 Schematic cross-sectional view of the section line EE' corresponding to the fingerprint sensing area FR. Figure 13 As shown, in the display device 1 a provided in this embodiment, the display panel 12 may have a fingerprint sensing area FR, and the fingerprint sensing area FR may include a light-transmitting region TR2 for allowing light to pass through. Figure 13 A light-transmitting area TR2 is taken as an example, but the present invention is not limited thereto. Specifically, the fingerprint sensing area FR may include a portion of the substrate 26, a portion of the circuit layer 28, a portion of the insulating layer IN4, and a portion of the light-shielding layer 30. A portion of the light-shielding layer 30 may have a plurality of openings OP11, and the openings OP11 may respectively define corresponding light-transmitting areas TR2. The light-transmitting area TR2 may not overlap with the light-emitting element 18 and the circuit layer 28 in the top-down direction TD. A portion of the insulating layer IN4 may have a plurality of openings OP12, which respectively correspond to the openings OP11. The light-shielding layer 46d of the color filter layer 46 may further include a plurality of openings OP10, which overlap with the light-transmitting area TR2 and correspond to the openings OP11. Through the openings OP10, OP12, and OP11, ambient light L may be incident on the sensing unit (e.g. Figure 2 In some embodiments, the top view size of the opening OP10 may be larger than the top view size of the opening OP12, and the top view size of the opening OP12 may be larger than the top view size of the opening OP11, so as to increase the light intensity detected by the fingerprint sensing module. Figure 13 In the embodiment, the structure of the fingerprint sensing region FR located outside the light-transmitting region TR2 may be similar to or identical to the structure of the normal region NR, and the other portion of the color filter layer 46 corresponding to the fingerprint sensing region FR may be similar to or identical to the portion of the color filter layer 46 corresponding to the normal region NR, and thus will not be repeated in detail.

[0074] like Figure 1 and Figure 13As shown, the density of the light-emitting elements 18 in the fingerprint sensing region FR may be approximately the same as the density of the light-emitting elements 14 in the normal region NR. Therefore, the circuit layer 28 in the fingerprint sensing region FR may not have an opening in the light-transmitting region TR2. In this case, the insulating layer IN1, the insulating layer IN2, the insulating layer IN3, the planar layer 36, and the buffer layer 44 may include a transparent insulating material to allow light to pass through. For example, in the horizontal direction (e.g., the horizontal direction HD1), the width of the light-transmitting region TR2 may be, for example, less than Figure 3 The width of the light-transmitting region TR1 is shown.

[0075] exist Figure 13 In the embodiment of FIG, the lens layer 24 may further optionally include a plurality of lenses 24d, which overlap with the light-transmitting region TR2. By overlapping the lens 24d with the light-transmitting region TR2, it is possible to help focus the ambient light L on the fingerprint sensing module located under the display panel 12, thereby improving the accuracy of the fingerprint detected by the fingerprint sensing module. In addition, the lens layer 24 also includes a plurality of lenses 24e, which overlap with the light-emitting element 18. Figure 13 In the embodiment, one lens 24e may overlap with one light emitting element 18, but is not limited thereto. In some embodiments, lenses 24e corresponding to different light emitting elements of the fingerprint sensing area FR may also be used. Figure 4 lens 24a or Figure 5 The design of lens 24b.

[0076] In some embodiments, the refractive index of lens 24d may be the same as or different from the refractive index of lens 24e. For example, the refractive index of lens 24d may be smaller than the refractive index of lens 24e, the refractive index of lens 24d corresponding to normal region NR (e.g., Figure 4 The refractive index of the lens 24a shown and / or the lens corresponding to the photographic region CR (for example, Figure 5 The refractive index of lens 24b shown in the figure is adjusted to increase the intensity of light detected by the fingerprint sensing module. The refractive index range of lens 24d may be, for example, from 1.01 to 1.50, and the refractive index range of lens 24e may be, for example, from 1.51 to 2.1, but is not limited thereto. Lens 24d and lens 24e may include different materials or the same material but with different combinations of components, such as acrylic materials, silicone materials, epoxy resins, polyimide or other suitable materials. In order to achieve the purpose of different refractive indices, it can be achieved by doping some inorganic particles into the material or changing its component combination. In some embodiments, lens 24d and / or lens 24e may, for example, include nanoparticles to adjust the refractive index. When lens 24e is the same as lens 24a, the refractive index of lens 24d may be less than the refractive index of lens 24a.

[0077] In some embodiments, the lenses 24e of the different light emitting elements corresponding to the fingerprint sensing area FR may also be Figure 6 In some embodiments, Figure 13 The other parts of the display device 1a shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0078] Figure 14 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 14 As shown, the display device 1g of this embodiment is Figure 13 The difference of one of the display devices 1a shown is that the color filter layer 46 may include multiple color filters 46e, which overlap with the light-transmitting region TR2. Specifically, the color filters 46e may be respectively disposed in the openings OP10 to allow light of the wavelength range detected by the fingerprint sensing module to pass through, thereby improving the detection accuracy. When the fingerprint sensing module can detect green light, the color filter 46e may be, for example, a green filter, but is not limited thereto. In some embodiments, Figure 14 The other parts of the display device 1g shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and thus will not be described in detail.

[0079] Figure 15 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 15 As shown, the display device 1h of this embodiment is Figure 13 One difference of the display device 1a shown is that the lens layer 24 does not have the lens 24d in the light-transmitting region TR2, but the present invention is not limited thereto. In some embodiments, Figure 15 The display device 1h can be used Figure 14 In some embodiments, the color filter layer 46 may include, but is not limited to, a color filter layer 46. Figure 15 The other parts of the display device 1h shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and thus will not be described in detail.

[0080] Figure 16 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 16 As shown, the display device 1i of this embodiment is Figure 13 The difference of one of the display devices 1a shown is that the width W2 of the lens 24d can be smaller than the width W1 of the lens 24e, the lens corresponding to the normal region NR (eg, Figure 4 The width of the lens 24a shown and / or the lens corresponding to the photographic area CR (for example, Figure 5In this case, the upper surface 24S of lens 24d (and / or lens 24a) and the upper surface 24S of lens 24e may have the same or different curvature radii. In some embodiments, Figure 16 The display device 1i can be used Figure 14 In some embodiments, the color filter layer 46 may include, but is not limited to, a color filter layer 46. Figure 16 The other parts of the display device 1i shown may adopt, for example, the display devices of other embodiments herein or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0081] Figure 17 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 17 As shown, the display device 1j of this embodiment is Figure 13 One of the differences of the display device 1a shown is that the upper surface 24S of the lens 24d and the upper surface 24S of the lens 24e may have different curvature radii. For example, the curvature radius of the upper surface 24S of the lens 24d may be greater than the curvature radius of the upper surface 24S of the lens 24e, but the present invention is not limited thereto. When the lens 24e is aligned with the lens corresponding to the normal region NR (e.g., Figure 4 When the lens 24a shown in FIG2 is the same, the curvature radius of the upper surface 24S of the lens 24d may be greater than the curvature radius of the upper surface 24S of the lens 24a. Figure 17 In some embodiments, the width of lens 24d may be the same as the width of lens 24e, but is not limited thereto. Figure 17 The display device 1j can be used Figure 14 In some embodiments, the color filter layer 46 may include, but is not limited to, a color filter layer 46. Figure 17 The other parts of the display device 1j shown may adopt, for example, the display devices of other embodiments in this document or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0082] Figure 18 FIG2 is a schematic cross-sectional view of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 18 As shown, the display device 1k of this embodiment is Figure 13 The difference of one of the display devices 1a shown is that the fingerprint sensing region FR of the display panel 12 may include a plurality of sensing units 22a, and the lens 24d may overlap with the sensing unit 22a in the top-view direction TD. Figure 18In the embodiment, the sensing unit 22a may be arranged in the circuit layer 28, and the circuit layer 28 may include a plurality of readout elements 58, which are electrically connected to the corresponding sensing units 22a and are used to read out the signals detected by the sensing units 22a. For example, the sensing unit 22a may be arranged between the readout element 58 and the flat layer 36, but is not limited thereto. The readout element 58 and the driving element 32 may be formed, for example, by the same process (such as a thin film transistor process). For example, the channel, source (drain) field and drain (source) field of the readout element 58 may be formed by the semiconductor layer 34, the gate of the readout element 58 may be formed by the metal layer M1, and the insulating layer IN1 may serve as the gate insulating layer of the readout element 58. In other words, the display panel 12 of this embodiment may, for example, include an embedded fingerprint sensor. Moreover, the source (drain) field and the drain (source) field of the readout element 58 may be electrically connected to different electrodes, respectively. The readout element 58 of the present invention is not limited thereto and may be adjusted according to needs. In Figure 18 In the embodiment of FIG. 5 , the metal layer M3 may further include, for example, an electrode E6 electrically connecting the readout element 58 and the sensing unit 22 a , but the present invention is not limited thereto.

[0083] It should be noted that since the sensing unit 22a can be embedded in the display panel 12, there is no need to set a fingerprint sensing module under the display panel 12. In this case, the ambient light will not be reflected by the fingerprint sensing module, so the fingerprint sensing area FR does not need to be Figure 13 The light shielding layer 30 is shown, but is not limited thereto.

[0084] In some embodiments, Figure 18 The other parts of the display device 1k shown may adopt, for example, the display devices of other embodiments in this document or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0085] Figure 19 Shown are schematic cross-sectional views of a portion of a display device corresponding to a fingerprint sensing area according to another embodiment of the present invention. Figure 19 As shown, the display device 11 of this embodiment is Figure 13 One of the differences of the display device 1a shown is that the lens layer 24 can be disposed on the color filter layer 46. In other words, the touch element layer 50 and the insulating layer 52 can be directly disposed on the encapsulation layer 40, but the present invention is not limited thereto. In some embodiments, other film layers can still exist between the touch element layer 50 and the encapsulation layer 40. In addition, in this embodiment, the fill layer 48 can be optionally disposed on the lens layer 24 to protect the lens layer 24, but the present invention is not limited thereto. In some embodiments, Figure 19 The other parts of the display device 11 shown may, for example, adopt the display devices of other embodiments in this document or a combination of at least two display devices of other embodiments, and therefore will not be described in detail.

[0086] In summary, in the display device of the present invention, by providing a light-transmitting area in the photographic area and / or a light-transmitting area in the fingerprint sensing area, the photographic module and / or fingerprint sensing module located below the display panel can detect the desired image, thereby achieving a design that integrates the photographic module and / or fingerprint sensing module into the display area and improving the screen-to-body ratio of the display device. Furthermore, by providing a lens layer on the display panel, the brightness or display quality of the image displayed by the display device can be improved when the density of light-emitting elements in the photographic area is reduced.

[0087] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A display device, characterized in that: include: A display panel having a normal area and a photographing area, wherein the normal area includes a plurality of first light-emitting elements, and the photographing area includes a plurality of second light-emitting elements; as well as a lens layer disposed on the normal area and the photographic area, wherein the lens layer includes a plurality of first lenses overlapping the plurality of first light-emitting elements and a plurality of second lenses overlapping the plurality of second light-emitting elements; The density of the plurality of first lenses located in the normal area is greater than the density of the plurality of second lenses located in the photographic area.

2. The display device according to claim 1, wherein A width of one of the plurality of first lenses is smaller than a width of one of the plurality of second lenses.

3. The display device according to claim 1, wherein The photographing area further includes a plurality of first light-transmitting areas for allowing light to pass through, and the lens layer further includes a plurality of third lenses overlapping with the first light-transmitting areas.

4. The display device according to claim 1, wherein One of the plurality of second lenses overlaps with a plurality of the plurality of second light emitting elements.

5. The display device according to claim 1, wherein The display panel further has a fingerprint sensing area, which includes a plurality of second light-transmitting areas for allowing light to pass through. The lens layer further includes a plurality of fourth lenses overlapping the plurality of second light-transmitting areas.

6. The display device according to claim 5, wherein A width of one of the plurality of fourth lenses is smaller than a width of one of the plurality of first lenses.

7. The display device according to claim 5, wherein A curvature radius of one of the plurality of fourth lenses is greater than a curvature radius of one of the plurality of first lenses.

8. The display device according to claim 5, wherein A refractive index of one of the plurality of fourth lenses is smaller than a refractive index of one of the plurality of first lenses.

9. The display device according to claim 5, wherein The invention also includes a color filter layer disposed on the lens layer, wherein the color filter layer includes a plurality of color filter units overlapping with the plurality of first light-emitting elements and the plurality of second light-emitting elements.

10. The display device according to claim 9, wherein The color filter layer further includes a plurality of openings overlapping with the plurality of second light-transmitting regions.

11. The display device according to claim 9, wherein The color filter layer further includes a plurality of green filters overlapping with the plurality of second light-transmitting regions.

12. The display device according to claim 5, wherein The device also includes a fingerprint sensing module, which is disposed under the display panel and overlaps with the plurality of second light-transmitting areas.

13. The display device according to claim 1, wherein The display panel further has a fingerprint sensing area, the fingerprint sensing area includes a plurality of sensing units, and the lens layer further includes a plurality of third lenses, and the plurality of sensing units overlap.

14. The display device according to claim 1, wherein It also includes a photographing module, which is arranged under the display panel and overlaps with the photographing area.

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